This bug was fixed in the package gzip - 1.10-2ubuntu2
---------------
gzip (1.10-2ubuntu2) hirsute; urgency=medium
[ William 'jawn-smith' Wilson ]
* Applying patch from upstream to fix a segfault caused by passing
multiple files larger than 5kb to a gzip command while zlib
acceleration is enabled (LP: #1901528)
-- Brian Murray <br...@ubuntu.com> Mon, 18 Jan 2021 10:35:03 -0800
** Changed in: gzip (Ubuntu)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1901528
Title:
[Ubuntu 20.10] - When zlib acceleration is enabled, gzip fails when
given multiple files larger than 5KB (gzip)
Status in Ubuntu on IBM z Systems:
New
Status in gzip package in Ubuntu:
Fix Released
Status in zlib package in Ubuntu:
Invalid
Bug description:
When zlib acceleration is enabled, gzip fails when given multiple
files larger than 5KB.
This problem does not happen when running gzip against a single file
at a time. It only happens when you provide multiple files as gzip
arguments.
So this works whether zlib acceleration is enabled or not:
for file in file1 file2; do gzip $file ; done
But this fails (when zlib acceleration is enabled):
gzip file1 file2
The patch to fix this has been accepted upstream:
https://git.savannah.gnu.org/cgit/gzip.git/commit/?id=be0a534ba2b6e77da289de8da79e70843b1028cc
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